Acerola (Barbados Cherry)

Acerola, also known as the Barbados cherry,and Amazon Cherry is a shrub that contains small red fruits, 1/2" ro 1" in diameter. These tangy fruits are loaded with vitamin C, containing 1000-2000 mg per gram in ripe fruit (potentially even more in almost ripe fruits).
Acerola is often used in beverages for flavor and to boost vitamin C. Acerola is grown throughout south and central America, and has been harvested in the US as a source of vitamin C (in Florida).

Acerola is available as frozen fruit, in drinks, and as a powder, as well as in supplements.

This video shows acerola on a tree. (Once the cat is shown, no more acerola is involved.)